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City of Santa Ana California Environmental Quality Act Initial Study/Mitigated Negative Declaration - 17 - 3.5 Cultural Resources Would the project: Environmental Issue Potentially Significant Impact Less Than Significant with Mitigation Incorporated Less Than Significant Impact No Impact a) Cause a substantial adverse change in the significance of a historical resource pursuant to § 15064.5? X b) Cause a substantial adverse change in the significance of an archaeological resource pursuant to § 15064.5? X c) Disturb any human remains, including those interred outside of dedicated cemeteries? X Discussion: a) A Cultural Resource Assessment was conducted by Terracon in November 2024. Terracon retained BCR Consulting LLC (BCR Consulting) to complete a Cultural resources Assessment for the project site. A records search of the surrounding areas via the South Central Coastal Information Center (SCCIC) at California State University, Fullerton. The search area included a one-mile buffer from the Project location. Data from the SCCIC indicated that there have been 41 previous cultural resources studies conducted within a one-mile radius. 19 cultural resources have been documented within the radius, including prehistoric and historic period built-environmental resources. One previous study evaluated the project site, and no cultural resources were identified during the study. A field survey was conducted by BCR Consulting and no cultural resources of any kind were identified within the Project boundaries. Site visibility was variable, averaging approximately 15 percent. Surficial sediments differed across the site; the southern portion featured dry, yellowish -brown, loamy sand with moderate gravel inclusions, while the northeast portion consisted of dry, light-brown sandy loam with minimal gravel inclusions. Significant disturbances from excavation and grading for pavement and landscaping were evident throughout the site. The vegetation included imported, landscaped trees and grass, as well as areas of imported desert flora. The Project area has low sensitivity to subsurface resources and will implement mitigation measure CUL-1 to reduce potential impacts to less than significant. b) See discussion above in part a). However, if during construction any archaeological remains are found, all construction will cease until qualified personnel can identify the remains and mitigate the findings. Impacts are anticipated to be less than significant with incorporating mitigation measures CUL-1 and CUL-2. c) No formal cemeteries were found on or near the Project site. Most Native American human remains are found in association with prehistoric archaeological sites. Since the region has low sensitivity to City Council 15 – 70 12/2/2025